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About the Role

We are seeking 1-2 Founding Engineers to join a rapidly scaling venture-backed startup focused on applying psychology to LLMs to drive leads and influence strategies. As a Founding Engineer, you will address bandwidth issues, expand core product features, and build the future of AI interpretability. This role requires high independence, exceptional communication skills, and end-to-end feature ownership.

Responsibilities

• Build and extend a universal context management platform that powers agentic workflows.
• Apply black-box AI interpretability techniques to reverse-engineer LLM opinions about brands.
• Take full ownership of features from customer needs through research, infrastructure, and production deployment.
• Help define new engineering team patterns and practices around agentic coding tools.
• Build internal automation and custom software for clients using AI agents with full company context.

Requirements

• 1–5 years of full-stack engineering experience.
• Previous startup experience is preferred.
• Non-traditional backgrounds are welcome.
• Exceptional communicators with slightly less experience will be considered.
• Mandatory proficiency in Python and React.
• Backend and infrastructure experience is heavily prioritized over frontend design.
• Prior experience with agentic AI systems and LLMs is required.
• Familiarity with Terraform, AWS, and modern tooling is a strong plus.
• Exceptional communication skills.
• Strong problem-solving abilities.
• High independence.
• Low-ego, team-oriented mindset.
• No new visa sponsorships are available.
• The company will support O-1 transfers and H-1B transfers.

Skills

• Python
• React
• Backend development
• Infrastructure development
• Agentic AI systems
• LLMs
• Terraform
• AWS
• Modern tooling
• Communication
• Problem-solving
• Independence
• Team-oriented mindset

Location

• San Francisco, CA

Work Type

• Full-time
• Onsite (5 days a week)

Experience Level

• 1-5 years

Salary/Compensations

• Competitive base salary (dependent on experience)
• 0.3% – 1.5% equity

About the Company

• Sperton Global is a recruitment and consulting company with an international reach.
• We are committed to helping our clients achieve success in their hiring processes, finding the right people for the right positions.